之前用FASTAPI寫了一個隨機cookies請求的接口,現在嘗試用golang實現同樣的效果

1.編寫go代碼

package mainimport ("database/sql""encoding/json""fmt"_ "github.com/go-sql-driver/mysql""log""net/http""os""time"
)// 獲取環境變量（優先使用環境變量，不存在則使用默認值）
func getEnv(key, defaultValue string) string {if value, exists := os.LookupEnv(key); exists {return value}return defaultValue
}// 數據庫配置
const (dbDriver   = "mysql"dbUser     = "nobuy"      // 替換為實際用戶名dbPassword = "@zzwl" // 替換為實際密碼dbHost     = "192.168.1.1" // 替換為實際主機dbPort     = "3306"      // 替換為實際端口dbName     = "nobuy"   // 替換為實際數據庫名
)// CookieResponse API響應結構
type CookieResponse struct {Status      string `json:"status"`Cookie      string `json:"cookie,omitempty"`Error       string `json:"error,omitempty"`UserAccount string `string:"user_account,omitempty"`
}var db *sql.DBfunc main() {initDB()defer db.Close()// 注冊路由apihttp.HandleFunc("/randomcookie", randomCookieHandler)// 啟動HTTP服務器port := ":8081"log.Printf("Server started at http://localhost%s", port)log.Fatal(http.ListenAndServe(port, nil))
}func initDB() {dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?parseTime=true",getEnv("DB_USER", dbUser),getEnv("DB_PASSWORD", dbPassword),getEnv("DB_HOST", dbHost),getEnv("DB_PORT", dbPort),getEnv("DB_NAME", dbName))var err errordb, err = sql.Open(dbDriver, dsn)if err != nil {log.Fatalf("Database connection failed: %v", err)}// 設置連接池參數db.SetMaxOpenConns(25)db.SetMaxIdleConns(25)db.SetConnMaxLifetime(5 * time.Minute)// 驗證數據庫連接if err = db.Ping(); err != nil {log.Fatalf("Database ping failed: %v", err)}log.Println("Database connected successfully")
}
func randomCookieHandler(w http.ResponseWriter, r *http.Request) {w.Header().Set("Content-Type", "application/json")response := CookieResponse{}var cookie stringvar user_account stringerr := db.QueryRow(`SELECT cookies,user_accountFROM external_accountWHERE account_type_id=2 AND is_deleted=0 AND account_status=0ORDER BY RAND()LIMIT 1`).Scan(&cookie, &user_account)switch {case err == sql.ErrNoRows:response.Status = "error"response.Error = "No cookies avaiable"w.WriteHeader(http.StatusNotFound)case err != nil:response.Status = "error"response.Error = fmt.Sprintf("Database error: %v", err)w.WriteHeader(http.StatusInternalServerError)default:response.Status = "success"response.Cookie = cookieresponse.UserAccount = user_accountlog.Printf(response.Status, response.Cookie, response.UserAccount)}json.NewEncoder(w).Encode(response)}

2.docker打包golang鏡像(直接運行.go文件)

打包的Dockerfile如下所示

FROM alibaba-cloud-linux-3-registry.cn-hangzhou.cr.aliyuncs.com/alinux3/golang AS builder# 設置工作目錄
WORKDIR /app
# 設置國內鏡像源
ENV GOPROXY=https://goproxy.cn,direct
# 復制 Go 源代碼到工作目錄
COPY . .# 構建你的 Go 程序
# RUN go build go_code/hello/demo.go# 暴露端口 8888
EXPOSE 8081# 設置容器啟動時執行的命令
CMD go run "cookie_api.go"

打包成docker鏡像

docker build -f Dockerfile3 -t cookieapi:1 .

3.docker打包golang鏡像

將golang打包成可執行程序,然后打包docker鏡像

FROM registry.cn-hangzhou.aliyuncs.com/devops_de/golang:1.21-alpine AS builder# 設置工作目錄
WORKDIR /app
# 設置國內鏡像源
ENV GOPROXY=https://goproxy.cn,direct
# 復制 Go 源代碼到工作目錄
COPY . .# 復制源代碼并編譯
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o nobuy-app# 運行階段
FROM registry.cn-hangzhou.aliyuncs.com/devops_de/alpine:3.18
WORKDIR /app
# 從構建階段復制二進制文件
COPY --from=builder /app/nobuy-app /app/nobuy-app
# 設置可執行權限
RUN chmod +x /app/nobuy-app
# 暴露端口 8888
EXPOSE 8081# 設置啟動命令
CMD ["/app/nobuy-app"]

4.運行效果對比

運行效果差異如下所示

[root@centos-1 cookies]# docker ps
CONTAINER ID   IMAGE                                                                                                    COMMAND                  CREATED        STATUS                 PORTS                                                                                            NAMES
adc6c31adf23   cookieapi:1                                                                                              "/app/nobuy-app"         2 hours ago    Up 2 hours             0.0.0.0:8181->8081/tcp, :::8181->8081/tcp                                                        romantic_bohr
f6023569cc62   cookies_api:0625                                                                                         "/bin/sh -c 'go run …"   3 hours ago    Up 3 hours             0.0.0.0:8089->8081/tcp, :::8089->8081/tcp     

上述結果可以看到,直接運行cookie_api.go和運行打包可執行的go程序,內存差了兩倍